15000V/120 ma NSTs, other XFMRs

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dave Hartwick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ddhartwick-at-earthlink-dot-net>

I've not coiled in about 5 years. This is not unusual. I've done it in
spurts since I was about 12, when I burned out my first NSTs (2- 12/60s,
iirc).

Well--I've been reading the Pupman list again and am starting to dust things
off for another Coiling burst. I would like to finish an  833A VTTC project;
but in the mean time, I've been surveying my transformer inventory. I have
the following:

25 MOTS--Appliance repair guy was going out of business

6 15/30 NSTs, in various states of working order

Collins Plate XFMR: 4600V / 325 ma / 100lbs. For VTTC duty--that current
rating must be massively conservative.

14.4 kV, 5 kVA piglet..

...But the most interesting items in my collection are 2 - 15000V/120ma
NSTs. These must be rare, since I rarely read of other coilers using them.

The problem is that one is dead, the other weak. I assume un-potting will
fix this, but I wonder if it is worthwhile? I stopped using NSTs some time
ago when I discovered MOTs would work--and then  finally bought a Piglet.
Still, for a smallish coil, one of those big NSTs would be ideal.

I've never un-potted an NST. I know it can be a mess. Maybe I should simply
sell these units as is for someone else to do the un-potting, but I wonder
if coilers would be interested in NSTs of questionable operational status?
Dave Hartwick